Question: Weather Bureau of which of the following country has declared that a La Nina weather event had developed in the Pacific Ocean?
a) Australia
b) Japan
c) India
d) Sri Lanka
Answer: (a)
Related Facts:-
- On 23 November 2021; Australia’s Bureau of Meteorology has declared that a La Nina weather event had developed in the Pacific Ocean.
- The event will bring the country in line with other agencies, and there will be greater prospect of a relatively cool, damp and stormy summer for much of the north eastern part of Australia
- The bureau said it had shifted its outlook for La Nina on its main climate drivers forecast.
- The bureau said that the Key atmospheric and oceanic indicators of the El Nino-Southern Oscillation (ENSO) show an established La Nina.
- It made the call based on sea-surface temperatures that were close to La Niña thresholds in a key region of the tropical Pacific
- They also confirmed with models which indicated that further cooling was likely.
- The indicators they watch include the amount of cloud buildup and the strength of trade winds.
- The current model outlooks suggest this La Nina will persist until the late southern hemisphere summer or early autumn 2022.
- The bureau said, extending the longevity of the event from earlier predictions that it would begin to dissipate by the end of January.
- A majority of the models used by the bureau now predict La Nina thresholds will be met in February 2022.
Links:-
https://www.bbc.com/news/world-australia-59383008
https://www.theguardian.com/australia-news/2021/nov/23/bom-declares-2021-la-nina-weather-event-for-australia